Revert "Used _ContextKeys for context like dicts"

[intgr]

This reverts commit cb2f233, PR #1298.

That change causes false positives with common template rendering patterns, and reasons for the change were not well explained.

See my 3 comments at #1298 (comment)

Related issues

Refs #1298, #1306.

[mschoettle]

Sorry, this might not be the feedback you are hoping for.

As the contributor of #1306 I am in favour of reverting this. I agree that context should be dict[str, Any]. I think the Django documentation supports this as well: https://docs.djangoproject.com/en/4.1/ref/templates/api/#rendering-a-context

[intgr]

Sorry, this might not be the feedback you are hoping for.

Contrary, feedback from community members and prior contributors is very much appreciated.

There's also tacit endorsement from ljodal in #1316 (comment)

For the specific PR in question here I'm also unsure what the goal of the initial PR was, but I predict a lot of errors in our codebases as well

I think I'm within my rights to consider PR this approved by community members and merge it.

Of course this reversion doesn't have to be final, if there's a good reason and a way to fix the issues with the original PR.

[mschoettle]

Thank you for your work and help in advancing this project!